Josiah Morton was born 1653 in Plymouth, Plymouth County, Massachusetts to Ephraim Morton (1623-1693) and Ann Cooper (1625-1691) and died 29 May 1694 Plymouth, Plymouth County, Massachusetts of unspecified causes. He married Susannah Wood (1664-1712) 8 March 1686 in Plymouth, Plymouth County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Susannah Morton (1686-1687) | |||
| Josiah Morton (1688-1761) | |||
| Susannah Morton (1690-1758) | 1 September 1690 Plymouth, Plymouth County, Massachusetts | 1758 Plymouth, Plymouth County, Massachusetts | Ephraim Morton (1678-1729) |
| Henry Morton (1692-1697) | |||
Siblings
| Name | Birth | Death | Joined with |
| George Morton (1645-) | |||
| Ephraim Morton (1648-1732) | 27 January 1648 Plymouth, Plymouth County, Massachusetts | 18 February 1732 Plymouth, Plymouth County, Massachusetts | Hannah Finney (1657-1730) |
| Rebecca Morton (1651-) | |||
| Josiah Morton (1653-1694) | 1653 Plymouth, Plymouth County, Massachusetts | 29 May 1694 Plymouth, Plymouth County, Massachusetts | Susannah Wood (1664-1712) |
| Eleazer Morton (1659-) | |||
| Thomas Morton (1667-) | |||
| Nathaniel Morton (c1670-) | |||
| Patience Morton (c1672-) | |||
| Mercy Morton (c1674-) | |||